Prysmian Cavi E Sistemi Energia S.r.l.

Pirelli Tyre S.p.a.

Prysmian S.p.a.

Stefano Solinas

Gianni Mancini

Cristiano Puppi

Luca Giannini

Marco Nahmias Nanni

Franco Veronelli

Giuseppina Ratti

Marco Arimondi

Guojun Dai

An intermediate preform is formed in a process of manufacturing an optical fibre by forming a sol containing a glass precursor; pouring the sol in a mold containing a set of elongate elements; aging the sol to obtain a gel body; removing the set of elongate elements from the gel body to create a corresponding set of holes in the gel body; and removing the gel body from the mold. The method further provides imparting a motion of the set of elongate elements during aging of the sol to avoid adhesion of the gel to the elongate elements, the motion being preferably a rotation about the respective axes or an alternate translation along the respective axes. An apparatus with means for carrying out the method is also described.

Method and apparatus for forming a preform for a micro-structured optical fiber

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Milan, Italy

Stefano Solinas